Engineering 101

Hot-Swap Power Switches From Diodes Suit Devices With Type-C USB


Optimized for USB and other hot-swap applications, the AP21410/AP21510 single-channel current limited power switches introduced by Diodes Incorporated are targeted at manufacturers of laptop computers, tablets and Chromebooks, especially those deploying the new Type-C USB port.

Diodes Incorporated AP21410 AP21510This family of power switches incorporates 0.4A current limiting, while operating from a 2.7V to 5.5V supply with a maximum continuous load current rating of 0.2A. Other protection features, such as 0.4ms controlled rise and fall times, support hot-swap connections between computing, communication and consumer electronics equipment, and peripherals. In addition, under-voltage lockout (UVLO) and reverse-current blocking protect the input power supply while thermal protection prevents damage to the IC under heavy-overload or short-circuit fault conditions

In full compliance with USB 2.0 and available with both polarities of enable input, the AP21410 (active-low) and AP21510 (active-high) switches also benefit from a 95mΩ on resistance and a very low 1μA shutdown current that contribute to reduced power consumption and extended battery life. Both versions of this power switch are supplied in a compact 6-pin U-DFN2018 package.

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